#include<iostream>
using namespace std;
class Date
{
public:
	Date(int year = 1, int month = 1, int day = 1)
	{
		_year = year;
		_month = month;
		_day = day;
	}
    bool operator == (const Date& x);
	bool operator < (const Date& x);
	bool operator > (const Date& x);

private:
	int _year;
	int _month;
	int _day;
};
